Fire extinguisher



Sept. 14, 1943. H. L. NELSON FIRE EXTINGUISHER Filed Oct. 2, 1941 INVENTOR .ZzzefiLJVsZ;

Arrb RNIYI BY w fimw Patented Sept. 14, 1943 UNITED STATES PATENT OFFICE I Y VI. 7 p I 2,'329, 55 2 51;?" 'f FIRE ex'memsnm HerbertL Nelsjon, en ag en i I I ,194I, Serial 1x15541337 1 1'Ql.aim.. (c1. 169- 3 2 I Application October 2 My invention relates to H fire "extinguishing equipment, andhas among its objects and advantages the provision of an improved receptacle for fire extinguishing materials and a bracket for supporting the receptacle.

In the accompanying drawing:

Figure 1 is a front elevational view of the receptacle and its bracket;

Figure 2 is a side elevational view;

Figure 3 is a sectional view along the line 3-3 of Figure 1; and 1 Figure 4 is a plan view of the bottom end of the bracket.

In the embodiment selected for illustration, I make use of a glass receptacle or bottle H! of circular cross section and of uniform diameter throughout its greater length. Between the circumferential beads l 2, the exterior surface of the bottle is rough, as at I4, to provide a surface which may be gripped firmly in the hand. The end of the bottle beneath the lower bead I2 is characterized by a taper l6 curving toward the axis of the bottle and in the direction of its bottom end. Figure 3 illustrates the bottom l8 as being bellied inwardly to provide an exterior concavity 20.

The upper end of the bottle In above the upper .bead I2 is formed as a neck 22 provided with a bead 24 and an outlet opening 26 of considerably smaller diameter than the inside diameter of the non-tapering length of the bottle. Opening 26 comprises an outlet for fire extinguishing material 28 in powder form. The material 28 is applied to the fire at its base by repeatedly and. quickly swinging the bottle with its neck end pointing in the direction of the zone'of application.

In a bottle having an inside diameter of two and one-half inches, the diameter of the opening 26 is one inch, and the length of theneck 22 .from a plane adjacent the upper base side of the top bead I2 is two inches. Neck 22 is characterized by a curved taper throughout its greater 7 length from the upper bead l2 and is then charthroughout its entire circumference.

struc'ti'onis' such as to prevent-unnecessarily large amounts of the powder from being thrown from the bottle at a stroke. The neck structure 22 restricts the flow of the powder in such manner as to prevent all the powder from being thrown from the bottle during one swinging motion thereof. In fact, the powder feeds from the bottle in such manner as to enable the operator to make a number of applications through a series of swinging motions. Thus the extinguishing powder may be efiectively applied to the fire and at the most desirable zones. The bottle ispreferably formed of glass so as to indicate visually the amount of extinguishing material therein.

The bottle [0 is associated with a bracket 30 which also constitutes a stopper or closure for the bottle. Bracket 30 is stamped from an originally flat sheet of metal to provide right angular ends 32 and 34. An opening 36 is provided in the end 32 for the reception of an upwardly bowed spring 38 bent from strap material. One end of the spring is secured at 40 to the body 42 of the bracket 30 between the ends 32 and 34. Spring 38 is tensioned against the bottom l8 inside the cavity 20, with the spring engaging the cavity in such manner as to urge the lower bead l2 firmly against the body 42 of the bracket.

An annular bead 44 is formed in the end 34, the wall 46 of the bead engaging the bead 24 Wall 46 is of such depth as to hold the bead 24 in spaced relationship with the plate area 48 of the end 34.

Thus the bead 44 positions the bead 24 concenuation of a reinforcing bead 52 extending along the side marginsof the body 42 and about the side and end margins of the end 34, as well as short distances along the side margins of the end 32.

An angular flange 54 is formed about the end 32.. To place the bottle I0 in the bracket 30, the bead 24 is positioned inside the annular bead 44, at which time the lower end of the bottle may be swung into engagement with the flange 54. The lower end of the bottle is then forcibly pressed-inwardly of the end 32 to bring the bottle to the position of Figure 3. When in this position, the ends 32 and 34 are under slight fiexure so as to press the annular bead 4'4 firmly against the head 24. At -the same time, the spring 38 maintains the lower bead l2 in engagement with the body 42, while the annular bead 44 prevents accidental lateral displacement of the neck end of the bottle. The bottle is held firmly'in position so as to be devoid of rattling. The bracket 30 may be secured to a support 56 by screws 58. Since the material 28 is in powdered form, the bracket 30 may be arranged horizontally or vertically on the support 56. A quick pull on the bottle releases it from the bracket 30. The annular flange 44 eliminates objectionable inside stoppers for closure purposes. v v V The bottom end of the bottle I0 lies in a plane at right angles to the axis of the bottle so that the latter will stand in an upright position on a flat surface. Flange 54 is also located at ri ht angles to the axis of the bottle and the body 42. Thus the bottle and its bracket will balance in an upright position on a flat surface.

Without further elaboration, the foregoing will so fully illustrate my invention, that; others may, by applying current knowledge readily adapt the same for use under various conditionsof service.

I claim:

A fire extinguisher comprising a bracket formed from a metallic sheet bent to provide two laterally projecting ends, a bottle for fire extinguishing material, said bottle being of such length as to fit tightly in an endwise position between said ends, the material of the bracket being sufliciently flexible to render said ends yieldable when said bottle is pressed into position therebetween, an annular bead stamped in one ol'said ends engageable externally with the neck end of the bottle to close the bottle and to re- .strain the latter from accidental displacement, the neck of the bottle having an annular bead engaging inside said first-mentioned annular bead, said bottle having a concaved bottom end, the other of said ends being provided with an opening, and a spring secured to said bracket having a bowed portion projecting through said opening and engaging said concaved end to hold the bottle against lateral displacement.

- H. L. NELSON. 

